Fix a TODO by making `conv_block_unblock_helper` consume the input.

[resistor]

[anastygnome]

@resistor Nice work here hmm, apart from the linter thing, clippy seems unhappy.

ERROR: `cargo clippy`: this argument is passed by value, but not consumed in the function body (file:'src/uu/dd/src/blocks.rs', line:25)

[anastygnome]

Also there seems to be a bunch of &buf that make the macos build unhappy

[sylvestre]

@resistor ping? Thanks

[resistor]

@resistor Nice work here hmm, apart from the linter thing, clippy seems unhappy.

ERROR: `cargo clippy`: this argument is passed by value, but not consumed in the function body (file:'src/uu/dd/src/blocks.rs', line:25)

Done

[resistor]

Also there seems to be a bunch of &buf that make the macos build unhappy

Should be resolved as well now.

[sylvestre]

The coverage implies that we don't have a test for this, is that correct?

[resistor]

The coverage implies that we don't have a test for this, is that correct?

I suppose so? I'm not familiar with this functionality.

[sylvestre]

Would it be possible for you to write a test? thanks :)

[resistor]

Done to the extent I can figure out how.